Dalheim (Luxembourgish: Duelem) is a commune and town in south-eastern Luxembourg. It is part of the canton of Remich, which is part of the district of Grevenmacher.
As of 2005 Other towns within the commune include Filsdorf and Welfrange.
, the town of Dalheim, which lies in the centre of the commune, has a population of 1,232.
Dalheim is the site of Luxembourg's most important Roman ruins. Known as Dalheim Ricciacum, it is home to an ancient Roman theatre.
Coordinates: 49°32′N 6°16′E / 49.533°N 6.267°E